An adjustable fixed reading light

Abstract

This utility model relates to an adjustable fixed reading light. The reading light includes a heat sink, a spherical shell assembly, a cable assembly, an upper shell, a lower shell, a sliding locking plate, and a base. The spherical shell assembly consists of an upper spherical shell and a lower spherical shell. Internally, from top to bottom, a glass lens, a wave-shaped washer, a lens, a circuit board assembly, and an open retaining ring are arranged sequentially. The open retaining ring is embedded in the circumferential groove of the heat sink for axial fixation. The two ends of the cable assembly are connected to the circuit board assembly and a connector, respectively. The upper and lower shells cover the spherical shell assembly and are fixed with glue and clips. The lower shell is egg-shaped and can rotate to adjust the illumination range. The sliding locking plate and the base are fitted onto the heat sink to ensure structural stability. This utility model's reading light has advantages such as simple structure, small size, light weight, easy installation, and adjustable illumination range, making it suitable for aircraft cabin lighting systems.

Description

Technical Field

[0001] This utility model relates to the field of fixed reading light technology, and in particular to an adjustable fixed reading light. Background Technology

[0002] Reading lights are essential equipment in aircraft cabin lighting systems. However, most existing reading lights suffer from problems such as complex structure, large size, and heavy weight, which not only increases the aircraft's load but also may lead to inconvenience in installation and maintenance. Furthermore, the light range adjustment function of some reading lights is not flexible enough to meet the reading needs of passengers in different scenarios. For example, the adjustment mechanism of some reading lights requires complex mechanical structures or electronic components to achieve angle or brightness adjustments, which not only increases production costs but may also affect the user experience due to component failure. At the same time, complex internal structures may also lead to poor heat dissipation, affecting the lifespan and safety of the lamp. Therefore, there is an urgent need for a reading light that is simple in structure, small in size, lightweight, and easy to adjust to meet the demand for efficient and convenient lighting equipment in aircraft cabins. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable fixed reading light, thereby solving the aforementioned problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An adjustable, fixed reading light includes:

[0006] The heat sink, with its top abutting against the circuit board assembly, provides fixed support for the glass lens, wave gasket, lens and circuit board assembly;

[0007] The spherical shell assembly includes an upper spherical shell and a lower spherical shell, which are glued together and fastened together. Inside, from top to bottom, there are glass lenses, wave washers, lenses, circuit board assemblies and opening retaining rings. The opening retaining rings are embedded in the circumferential grooves of the heat sink to ensure the axial stability of the spherical shell assembly.

[0008] The cable assembly consists of two cables, one end of which is soldered to the circuit board assembly, and the other end passes through two opposing semi-circular slots on the heat sink in sequence, and is connected to the connector after crimping the terminal to realize the interconnection between the reading light and the on-board electrical system.

[0009] The upper and lower shells cover the spherical shell assembly and are fixed by adhesive and snap-fit ​​connection. The lower shell is egg-shaped and located between the base and the lower spherical shell. It can rotate and maintain its position by friction with the base and the lower spherical shell after rotation, thereby blocking the light emitted by the circuit board assembly and adjusting the illumination range.

[0010] The sliding locking plate and the base are fitted onto the radiator. The sliding locking plate is located between the base and the assembly of the upper and lower shells. The inner protrusions of the base and the lower spherical shell cooperate with the axial vertical groove of the radiator to ensure circumferential fixation of the structure.

[0011] The upper housing has a ring of ribs around its outer perimeter, and each rib has a groove. With the help of clamps, the reading light can be fixed to the upper component.

[0012] In some specific embodiments, glue is applied and a snap fastener is provided at the connection between the upper and lower spherical shells. The glass lens is attached to the inner wall of the upper spherical shell. The wave washer, lens, and circuit board assembly are connected in sequence. The upper end face of the heat sink abuts against the circuit board assembly, and the open retaining ring is embedded in the circumferential groove of the heat sink.

[0013] In some specific embodiments, the cables of the cable assembly are soldered to the circuit board assembly, pass through the heat sink semicircular groove, and are connected to the connector after being crimped with terminals.

[0014] In some specific embodiments, the sliding locking plate is made of stainless steel and is located between the base and the upper and lower housing assembly. The inner protrusions of the base and the lower spherical shell cooperate with the axial vertical groove of the heat sink.

[0015] In some specific embodiments, the lower shell is egg-shaped and maintains its position through friction after rotation, while grooves are formed on the ribs of the upper shell to match the clamps.

[0016] In some specific embodiments, the heat sink is made of aluminum alloy with an anodized surface, the sliding lock plate is made of stainless steel, and the base is made of plastic.

[0017] In some specific embodiments, the upper shell, lower shell, and upper and lower spherical shells of the spherical shell assembly are made of plastic, the glass lens is optical glass, the lens is an optical lens, the opening retaining ring is made of rubber, and the wave washer is made of metal.

[0018] In some specific embodiments, the cable assembly uses aviation-grade wires, flame-retardant sheaths, solder joints made of tin-lead solder, cold-pressed terminals, and aviation plugs as connectors.

[0019] In some specific embodiments, the lower housing can be rotated to block light, the friction between the lower housing and the base and the lower spherical shell is controllable, the groove of the upper housing is a rectangular groove, and the clamp is made of stainless steel.

[0020] In some specific embodiments, the axial vertical groove of the heat sink matches the protrusion of the base and the lower spherical shell, the open retaining ring is embedded in the circumferential groove of the heat sink, the upper spherical shell and the lower spherical shell are fixed by glue and buckles, and the installation order and position of the glass lens, wave gasket, lens and circuit board assembly in the spherical shell assembly are optimized.

[0021] The beneficial effects of this utility model are as follows: This utility model relates to an adjustable fixed reading lamp. The reading lamp includes a heat sink, a spherical shell assembly, a cable assembly, an upper shell, a lower shell, a sliding locking plate, and a base. The spherical shell assembly consists of an upper spherical shell and a lower spherical shell. Internally, from top to bottom, a glass lens, a wave-shaped washer, a lens, a circuit board assembly, and an open retaining ring are arranged sequentially. The open retaining ring is embedded in the circumferential groove of the heat sink to achieve axial fixation. The two ends of the cable assembly are connected to the circuit board assembly and a connector, respectively. The upper and lower shells cover the spherical shell assembly and are fixed with glue and clips. The lower shell is egg-shaped and can rotate to adjust the illumination range. The sliding locking plate and the base are fitted onto the heat sink to ensure structural stability. This utility model has the following beneficial effects:

[0022] Simple structure: This reading light adopts a simple design with few components, making it easy to assemble and maintain, thus reducing production costs and maintenance difficulty.

[0023] Compact size: It can effectively save valuable space in the aircraft cabin and is suitable for installation and use in limited spaces.

[0024] Lightweight: The overall weight is light, which reduces the load on the aircraft, helps to reduce fuel consumption, and facilitates installation and placement in the aircraft cabin.

[0025] Easy to adjust: By rotating the egg-shaped lower shell, the range of light can be adjusted to meet different reading needs of passengers and improve the comfort and convenience of use.

[0026] Secure connection: The combination of adhesive and clips ensures a stable connection between components, improving product reliability and reducing the risk of loosening and malfunction during use.

[0027] Excellent heat dissipation performance: The heat sink design effectively improves the heat dissipation performance of the lamp, ensuring the stability and lifespan of the lamp during long-term use.

[0028] Easy installation: The outer periphery of the upper housing has grooves, which, when used with clamps, can easily fix the reading light to the upper component, enabling quick installation and improving installation efficiency.

[0029] High applicability: This reading light is suitable for aircraft cabin lighting systems, meets the special requirements of aviation environment for lighting fixtures, and has a wide range of application prospects. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of an adjustable fixed reading lamp structure according to this utility model;

[0031] Figure 2 This is a schematic diagram of the internal structure of the spherical shell assembly of this utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the heat sink of this utility model;

[0033] Figure 4 This is a schematic diagram of the external structure of the spherical shell assembly of this utility model.

[0034] In the attached diagram, 1 is the heat sink; 2 is the sliding locking plate; 3 is the base; 4 is the upper housing; 5 is the lower housing; 6 is the spherical shell assembly; 7 is the upper spherical shell; 8 is the lower spherical shell; 9 is the glass lens; 10 is the lens; 11 is the opening retaining ring; 12 is the wave washer; 13 is the circuit board assembly; and 14 is the cable assembly. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0036] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 An adjustable fixed reading light is shown, comprising:

[0037] The heat sink 1, with its top abutting against the circuit board assembly 13, provides fixed support for the glass lens 9, the wave washer 12, the lens 10 and the circuit board assembly 13;

[0038] The spherical shell assembly 6 includes an upper spherical shell 7 and a lower spherical shell 8, which are glued together and fastened together. Inside, from top to bottom, there are a glass lens 9, a wave washer 12, a lens 10, a circuit board assembly 13 and an opening retaining ring 11. The opening retaining ring 11 is embedded in the circumferential groove of the heat sink 1 to ensure the axial stability of the spherical shell assembly 6.

[0039] The cable assembly 14 includes two cables, one end of which is soldered to the circuit board assembly 13, and the other end passes through two opposing semi-circular slots of the heat sink 1 in sequence, and is connected to the connector after crimping the terminal to realize the interconnection between the reading light and the on-board electrical system.

[0040] The upper shell 4 and the lower shell 5 cover the spherical shell assembly 6 and are fixed by adhesive and snap-fit ​​connection. The lower shell 5 is egg-shaped and located between the base 3 and the lower spherical shell 8. It can rotate and maintain its position by friction with the base 3 and the lower spherical shell 8 after rotation, thereby blocking the light emitted by the circuit board assembly 13 and adjusting the illumination range.

[0041] The sliding locking piece 2 and the base 3 are fitted onto the radiator 1. The sliding locking piece 2 is located between the base 3 and the assembly of the upper shell 4 and the lower shell 5. The inner protrusion of the base 3 and the lower spherical shell 8 cooperates with the axial vertical groove of the radiator 1 to ensure the circumferential fixation of the structure.

[0042] The upper housing 4 has a rib around its outer perimeter, and each rib has a groove. With the help of a clamp, the reading light can be fixed to the upper component.

[0043] In this embodiment, the structure and function of the reading lamp are as follows:

[0044] 1. The heat sink 1 is made of aluminum alloy with an anodized surface. Its top abuts against the circuit board assembly 13, providing fixed support for the glass lens 9, the wave washer 12, the lens 10, and the circuit board assembly 13. The heat sink design not only improves the heat dissipation performance of the lamp but also ensures the stability of the internal components. Its axial vertical groove matches the protrusions of the base 3 and the lower spherical shell 8, ensuring circumferential fixation of the structure. The heat sink is equivalent to the "skeleton" of the reading lamp, supporting and fixing the internal components while dissipating the heat generated during lamp operation, ensuring the stability and lifespan of the lamp.

[0045] 2. The spherical housing assembly 6 includes an upper spherical housing 7 and a lower spherical housing 8, which are glued together and fastened together with snaps. Internally, from top to bottom, are arranged a glass lens 9, a wave-shaped washer 12, a lens 10, a circuit board assembly 13, and an open retaining ring 11. The open retaining ring is embedded in the circumferential groove of the heat sink to ensure the axial stability of the spherical housing assembly. The glass lens is optical glass, and the lens is an optical lens; together with the circuit board assembly, they achieve the illumination function. The wave-shaped washer is made of metal and serves as a buffer and seal. The spherical housing assembly is essentially the "core" of the reading lamp; its internal components work together to achieve illumination and heat dissipation functions, while the open retaining ring, in conjunction with the heat sink, ensures structural stability.

[0046] 3. The cable assembly 14 comprises two cables, one end of which is soldered to the circuit board assembly 13, and the other end passes sequentially through two opposing semi-circular slots on the heat sink 1, and is connected to a connector after crimping terminals, thereby interconnecting the reading light with the aircraft's electrical system. The cables are aviation-grade wires with flame-retardant outer sheaths, solder joints using tin-lead solder, cold-pressed terminals, and aviation plugs. The cable assembly acts as the "nerve" of the reading light, connecting the circuit board assembly to the aircraft's electrical system, providing power to the light fixture, and ensuring the reliability and safety of the connection.

[0047] 4. The upper housing 4 and lower housing 5 enclose the spherical shell assembly 6, and are fixed by adhesive and snap-fit ​​connections. The lower housing is egg-shaped and located between the base 3 and the lower spherical shell 8, and can rotate to adjust the illumination range. After rotation, the lower housing maintains its position by the friction between itself, the base, and the lower spherical shell, blocking the light emitted by the circuit board assembly. The upper housing has a rib around its outer perimeter, with grooves on each rib, which, when used with clamps, can fix the reading lamp to the upper assembly. The upper and lower housings act as the "outer shell" of the reading lamp, protecting the internal components, while the rotation of the lower housing allows for adjustment of the illumination range, improving user comfort and convenience.

[0048] 5. The sliding locking plate 2 and the base 3 are fitted onto the heat sink, with the sliding locking plate positioned between the base and the upper and lower housings of the assembly. The protrusions on the inner side of the base and the lower spherical shell engage with the axial vertical groove of the heat sink to ensure circumferential fixation of the structure. The sliding locking plate is made of stainless steel, and the base is made of plastic. The sliding locking plate and the base act as "connectors" for the reading light, tightly connecting all components to ensure the stability and reliability of the structure.

[0049] 6. Component Installation Sequence and Position: The installation sequence and position of the glass lens, wave-shaped gasket, lens, and circuit board assembly within the spherical housing assembly have been optimized to achieve the best lighting effect and heat dissipation performance. The upper and lower spherical housings are secured with adhesive and clips to ensure stable installation of the internal components.

[0050] 7. Material Selection

[0051] Radiator: Made of aluminum alloy with anodized surface, it has good heat dissipation performance and corrosion resistance.

[0052] Sliding lock plate: Made of stainless steel, wear-resistant, ensuring structural stability.

[0053] Base: Made of plastic, lightweight and easy to mold.

[0054] Upper shell, lower shell, and upper and lower spherical shells of the spherical shell assembly: made of plastic to reduce overall weight.

[0055] Glass lens: Optical glass, the lens is an optical lens, ensuring clear transmission of light.

[0056] Opening retaining ring: Made of rubber, it serves as a seal and cushioning element.

[0057] Wave-shaped gasket: Made of metal, providing cushioning and sealing.

[0058] Cable assembly: aviation-grade wires with flame-retardant outer sheath, solder joints made of tin-lead solder, cold-pressed terminals, and aviation plugs to ensure reliable and safe connections.

[0059] 8. Installation method: The upper housing has a ring of ribs around its outer perimeter, with grooves on each rib. Using clamps, the reading light can be fixed to the upper-level component. This installation method is simple and convenient, allowing for quick installation and removal within the aircraft cabin.

[0060] 9. Functional Features

[0061] Simple structure: fewer components, easy to assemble and maintain, reducing production costs and maintenance difficulty.

[0062] Compact size: Saves space in the aircraft cabin, suitable for installation and use in limited spaces.

[0063] Lightweight: Reduces the aircraft's load and helps reduce fuel consumption.

[0064] Easy to adjust: The lower shell can rotate and maintain its position through friction, thereby adjusting the illumination range to meet reading needs in different scenarios.

[0065] Secure connection: The combination of glue and clips ensures a stable connection between the components.

[0066] Excellent heat dissipation performance: The heat sink design effectively improves heat dissipation performance, ensuring the stability and lifespan of the lamps during long-term use.

[0067] Easy installation: The grooved design of the upper shell, combined with clamps, enables quick installation and improves installation efficiency.

[0068] High applicability: It meets the special requirements of aviation environment for lighting fixtures and has a wide range of application prospects.

[0069] This design cleverly combines the functions and characteristics of each component. By optimizing the structure and material selection, it achieves a reading light that is simple in structure, small in size, light in weight, easy to adjust, and has good heat dissipation performance, making it suitable for aircraft cabin lighting systems.

[0070] In some specific embodiments, glue is applied and a snap fastener is provided at the connection between the upper spherical shell 7 and the lower spherical shell 8. The glass lens 9 is attached to the inner wall of the upper spherical shell 7. The wave washer 12, the lens 10, and the circuit board assembly 13 are connected in sequence. The upper end face of the heat sink 1 abuts against the circuit board assembly 13. The open retaining ring 11 is embedded in the circumferential groove of the heat sink 1.

[0071] In this embodiment, the connection between the upper and lower spherical shells is achieved by applying adhesive to the joint between the upper spherical shell 7 and the lower spherical shell 8. This adhesive has strong adhesion, ensuring a tight bond between the two. Simultaneously, a snap-fit ​​structure is designed. The mechanical locking effect of the snap-fit ​​complements the adhesive effect of the adhesive, greatly enhancing the stability of the connection between the upper and lower spherical shells and effectively preventing loosening due to vibration or other external forces during use.

[0072] Installation of the glass lens: The glass lens 9 is directly and tightly fitted to the inner wall of the upper spherical shell 7. This fitting method ensures that the glass lens maintains a stable position inside the spherical shell assembly, reduces light refraction deviation caused by shaking, and guarantees the focusing effect of light.

[0073] The internal components are connected sequentially: the wave-shaped washer 12, the lens 10, and the circuit board assembly 13 are connected in sequence. The elastic properties of the wave-shaped washer serve as a buffer and seal, relieving mechanical stress between internal components and preventing dust and other foreign objects from entering. The lens is used to converge or diverge light to achieve the desired lighting effect. The circuit board assembly is the core control part of the reading lamp, carrying the lighting source and related control components, and realizing the operation of turning the lighting function on, off, and adjusting.

[0074] The contact between the heat sink and the circuit board assembly: The upper surface of the heat sink 1 abuts against the circuit board assembly 13. This contact design allows the heat generated by the circuit board assembly during operation to be quickly transferred to the heat sink. Utilizing the heat sink's large surface area and excellent heat dissipation performance, the heat is dissipated into the surrounding environment, thereby reducing the temperature of the circuit board assembly, ensuring its stable operation, and extending its service life.

[0075] The fixing function of the open retaining ring: The open retaining ring 11 is embedded in the circumferential groove of the heat sink 1. The elasticity of the open retaining ring allows it to be tightly embedded in the groove, thereby generating an axial limiting force on the spherical housing assembly 6, preventing the spherical housing assembly from displacing axially, and ensuring the axial stability of the entire internal structure of the reading lamp.

[0076] In some specific embodiments, the cable of the cable assembly 14 is soldered to the circuit board assembly 13, passes through the semi-circular groove of the heat sink 1, and is connected to the connector after crimping the terminals.

[0077] In this embodiment, the cable is soldered to the circuit board assembly: one end of the cable in the cable assembly 14 is firmly soldered to the circuit board assembly 13. The solder joint is connected by tin-lead solder, which has good conductivity and adhesion, ensuring a stable and reliable electrical connection between the cable and the circuit board assembly, guaranteeing smooth current conduction, and enabling the reading light to work normally.

[0078] Cable routing: After exiting the circuit board assembly, the cable passes sequentially through two opposing semicircular slots on heat sink 1. The design of these two semicircular slots provides a clear guiding path for the cable, allowing it to pass through the heat sink neatly and orderly, avoiding interference or friction with other components during the cable routing process, and also facilitating subsequent assembly and maintenance.

[0079] Connection between crimp terminals and connectors: After the cable passes through the heat sink, its other end is crimped. The crimp terminals are cold-pressed, meaning they mechanically press the cable and terminal together tightly, resulting in a strong, reliable connection with low contact resistance. The crimped cable is then connected to the connector, which is an aviation plug. Aviation plugs offer excellent sealing, reliability, and vibration resistance, ensuring a stable and secure electrical connection between the reading light and the aircraft's electrical system. Even during turbulence or other complex conditions, the connection remains unbroken and the signal uninterrupted.

[0080] In some specific embodiments, the sliding locking piece 2 is made of stainless steel and is located between the base 3 and the upper housing 4 and lower housing 5 assembly. The inner protrusions of the base 3 and the lower spherical shell 8 cooperate with the axial vertical groove of the radiator 1.

[0081] In this embodiment, the sliding locking plate is made of stainless steel. Stainless steel has high strength, wear resistance, and corrosion resistance, and can withstand certain mechanical stress and friction. It is also rust-resistant, ensuring the stable performance of the sliding locking plate during long-term use. The sliding locking plate is located between the base 3 and the upper housing 4 and lower housing 5 assembly, serving as a connection and limiting element, making the entire reading light structure more compact and stable.

[0082] The base and lower spherical shell feature a raised design: The inner sides of the base 3 and lower spherical shell 8 have raised structures. These raised structures match the axial vertical grooves on the heat sink 1, allowing for precise insertion. This design not only increases the contact area between the base and lower spherical shell and the heat sink, improving connection strength, but also effectively prevents the base and lower spherical shell from rotating circumferentially. This ensures the circumferential fixation of the entire reading lamp structure, guaranteeing the stability of the relative positions of the components during use and preventing any impact on the normal function and lighting effect of the reading lamp.

[0083] In some specific embodiments, the lower shell 5 is egg-shaped and maintains its position through friction after rotation, while grooves are formed on the ribs of the upper shell 4 to match the clamps.

[0084] In this embodiment, the lower housing features an eggshell-shaped design: the lower housing 5 is eggshell-shaped. This unique shape provides a large surface area and good structural strength, while also offering an adjustable light-shielding surface. When the lower housing is rotated, its eggshell-shaped surface effectively blocks the light emitted by the circuit board assembly 13. By adjusting the rotation angle of the lower housing, the illumination range can be precisely controlled to meet the needs of passengers in different reading scenarios, such as localized lighting or wider area lighting.

[0085] Friction retention after rotation: After the lower housing rotates, it is maintained in a specific position by the friction between it and the base 3 and the lower spherical shell 8. This friction is generated because there is a certain contact pressure and friction coefficient between the lower housing and the base and the lower spherical shell. When it rotates to the appropriate position, the friction can balance the rotation trend of the lower housing and keep it stable. No additional locking device is required, which simplifies the structural design and also makes it convenient for users to make quick adjustments.

[0086] The grooves on the upper housing match the clamps: Grooves are formed on the ribs of the upper housing 4, and the shape and size of these grooves match the clamps. The clamps are usually made of stainless steel, which has good elasticity and strength. When installing the reading light, the clamps are passed through the grooves on the ribs of the upper housing, and then the two ends of the clamps are tightened to securely fix the reading light to the upper component. This installation method is simple and quick, requiring no complicated tools or cumbersome steps, improving installation efficiency, and also facilitating subsequent disassembly and maintenance.

[0087] In some specific embodiments, the heat sink 1 is made of aluminum alloy with an anodized surface, the sliding lock plate 2 is made of stainless steel, and the base 3 is made of plastic.

[0088] In this embodiment, the material and treatment of the heat sink are as follows: Heat sink 1 is made of aluminum alloy. Aluminum alloy has advantages such as low density, high strength, and good heat dissipation performance, which can effectively reduce the overall weight while ensuring the structural strength of the reading lamp, and quickly dissipate the heat generated by the internal components. Its surface is anodized, which forms a dense oxide film on the surface of the aluminum alloy, which not only enhances the corrosion resistance and wear resistance of the heat sink, but also improves the surface aesthetics and service life.

[0089] Stainless steel material for sliding lock plate: Sliding lock plate 2 is made of stainless steel. As mentioned above, stainless steel gives the sliding lock plate good corrosion resistance and mechanical properties, which can adapt to the complex environmental conditions inside the aircraft cabin, ensuring that it can play a stable role in connection and limiting for a long time, and reducing problems such as structural loosening caused by material aging or damage.

[0090] Base Material: Base 3 is made of plastic. Plastic is relatively lightweight, which helps reduce the overall weight of the reading lamp. At the same time, it has a certain degree of elasticity, which can provide appropriate cushioning and shock absorption when the base is in contact with components such as the heat sink and lower spherical shell. This reduces the impact of vibrations during aircraft flight on the precision components inside the reading lamp and protects vulnerable components such as circuit board assemblies.

[0091] In some specific embodiments, the upper housing 4 and the lower housing 5 are made of plastic, the upper spherical shell 7 and the lower spherical shell 8 of the spherical shell assembly 6 are also made of plastic, the glass lens 9 is optical glass, the lens 10 is an optical lens, the opening retaining ring 11 is made of rubber, and the wave washer 12 is made of metal.

[0092] In this embodiment, the upper shell, lower shell, and spherical shell assembly are all made of plastic: the upper shell 4, lower shell 5, upper spherical shell 7, and lower spherical shell 8 are all made of plastic. The choice of plastic material makes these components lightweight, facilitating installation and transportation, and also allows them to be easily processed into various complex shapes to meet the requirements of the reading lamp's appearance design and internal structural layout. Furthermore, the plastic material also has certain insulating properties, providing some protection for the internal circuit components and preventing safety hazards such as leakage.

[0093] Optical glass material of the glass lens: Glass lens 9 is made of optical glass. Optical glass has the characteristics of high transparency, low refractive index, and good light transmittance, which can ensure the clarity and brightness of light when it passes through, reduce light scattering and loss, make the light emitted by the reading lamp brighter and more focused, and provide a high-quality lighting effect.

[0094] Optical lens material: Lens 10 is made of optical lens material. This lens is precision-processed and designed with specific curvature and optical properties, which can effectively converge or diverge light. It can adjust the distribution range and intensity of light according to actual needs, optimize the lighting effect of the reading lamp, and meet the lighting requirements of different scenarios.

[0095] The rubber material of the opening retaining ring: The opening retaining ring 11 is made of rubber. Rubber has good elasticity and flexibility, allowing it to fit tightly into the circumferential groove of the radiator 1, thus achieving axial restraint of the spherical housing assembly 6. At the same time, the rubber material also has a certain degree of shock absorption and sound insulation, reducing the transmission of vibration and noise during the operation of the reading light and improving user comfort.

[0096] The wave-shaped washer is made of metal. The metal material gives the wave-shaped washer high strength and elasticity, allowing it to deform elastically under pressure and return to its original shape after the pressure is released, thus providing cushioning and shock absorption. Furthermore, the metal wave-shaped washer also has good thermal conductivity, helping to dissipate heat generated by internal components and further improving the heat dissipation performance of the reading light.

[0097] In some specific embodiments, the cable assembly 14 has an aviation-grade cable, a flame-retardant outer sheath, solder joints made of tin-lead solder, a cold-pressed terminal, and an aviation plug as the connector.

[0098] In this embodiment, the cables meet aviation-grade standards: the cables in cable assembly 14 are selected as aviation-grade wires. Aviation-grade wires have strict quality standards and performance requirements, can adapt to the complex electromagnetic environment and harsh working conditions on aircraft, and have good anti-interference capabilities, high temperature resistance, and mechanical strength. This ensures that the power and signal transmission of the reading lights are stable and reliable during aircraft flight, unaffected by external factors, and provides passengers with continuous and stable lighting services.

[0099] Flame-retardant outer sheath: The cable's outer sheath is made of flame-retardant material. This material self-extinguishes upon contact with a fire source, preventing the flame from spreading along the cable, thus effectively reducing the risk of fire, improving the safety performance of the reading light, and meeting the stringent fire safety requirements of the aviation industry.

[0100] Tin-lead solder for solder joints: Tin-lead solder is used for soldering the cables to the circuit board assembly 13. Tin-lead solder has good conductivity, solderability, and mechanical strength, enabling it to form a strong and reliable electrical connection during the soldering process and ensuring smooth current conduction. At the same time, tin-lead solder has a moderate melting point, making it easy to handle, and the solder joints produced have good corrosion resistance, allowing for long-term stable operation.

[0101] Cold-pressed terminals for crimp connectors: Crimped terminals utilize cold-pressed terminals. Cold-pressed terminals use mechanical pressure to tightly connect the cable to the terminal, eliminating the need for soldering and avoiding problems such as incomplete soldering and short circuits that can occur during soldering. Cold-pressed terminals provide a robust connection with low contact resistance, enabling them to withstand larger current loads and ensuring a stable connection between the cable and connector, thus improving the reliability and safety of the electrical connection.

[0102] Aviation-grade connectors: Aviation-grade connectors are selected. These connectors feature a multi-layered sealing structure, effectively preventing the ingress of dust, moisture, and other external substances, ensuring the stability of the electrical connection. Their pins and sockets are manufactured with high precision, ensuring excellent contact and a long mating lifespan. They maintain consistent performance even during frequent mating operations in flight, providing a stable and secure connection between the reading light and the aircraft's electrical system.

[0103] In some specific embodiments, the lower housing 5 can be rotated to block light, the friction between it and the base 3 and the lower spherical shell 8 is controllable, the groove of the upper housing 4 is a rectangular groove, and the clamp is made of stainless steel.

[0104] In this embodiment, the lower housing's light-shielding and friction adjustment are as follows: Besides its egg-shell shape, the friction between the lower housing 5 and the base 3 and lower spherical shell 8 during rotation is controllable. By rationally designing the material, roughness, and mating dimensions of the contact surfaces between the lower housing and the base / spherical shell, the magnitude of the friction can be precisely adjusted. This allows the user to easily rotate the lower housing to change the illumination range, and once rotated to the appropriate position, the lower housing can stably maintain that position under the action of friction, preventing positional shifts due to slight vibrations or external forces, thus ensuring the stability of the lighting effect.

[0105] The upper housing features a rectangular groove design: the groove on the upper housing 4 is rectangular. The rectangular groove has a regular shape and precise dimensions, allowing for a tight fit with the clamp. After the clamp passes through the rectangular groove, tightening the clamp securely fixes the reading light to the upper component. This rectangular groove design not only ensures the stability of the clamp installation but also adapts to different sizes of clamps and installation positions to a certain extent, improving installation flexibility and compatibility.

[0106] Stainless steel material for the clamps: The clamps are made of stainless steel. Stainless steel clamps have high strength, good corrosion resistance, and a long service life. They can maintain stable performance in the complex environment of aircraft cabins, such as humidity and high salt content, and are not easily rusted or damaged. Their smooth surface makes them easy to clean and maintain, while also ensuring the aesthetics of the reading light after installation.

[0107] In some specific embodiments, the axial vertical groove of the heat sink 1 matches the protrusion of the base 3 and the lower spherical shell 8, the opening retaining ring 11 is embedded in the circumferential groove of the heat sink 1, the upper spherical shell 7 and the lower spherical shell 8 are fixed by glue and buckles, and the installation order and position of the glass lens 9, the wave washer 12, the lens 10 and the circuit board assembly 13 in the spherical shell assembly 6 are optimized.

[0108] In this embodiment, the axial vertical groove on the radiator 1 matches the protrusion on the base 3 and the lower spherical shell 8. This precise matching design allows the base and the lower spherical shell to be tightly installed on the radiator, ensuring the circumferential fixation of the entire reading lamp structure. The cooperation between the axial vertical groove and the protrusion also serves as a guide, allowing the protrusion to be smoothly inserted along the vertical groove during assembly, ensuring accurate installation of each component and improving assembly efficiency and quality.

[0109] The upper and lower spherical shells are fixed together using both adhesive and clips. This dual-fixation method combines the bonding strength of the adhesive with the mechanical locking effect of the clips, greatly enhancing the reliability of the connection between the upper and lower spherical shells. Even if the adhesive deteriorates due to environmental factors or aging during long-term use, the clips will still maintain a certain locking effect, preventing the spherical shell assembly from loosening and ensuring the stability of the internal structure of the reading lamp and the normal functioning of the lighting.

[0110] Optimized layout of internal components: The installation sequence and position of the glass lens 9, wave gasket 12, lens 10, and circuit board assembly 13 within the spherical housing assembly 6 have been optimized. Through careful design and repeated testing, the optimal installation sequence and position of these components were determined to achieve the best optical performance and heat dissipation effect of the reading lamp. For example, the glass lens is positioned close to the light source to initially converge the light; the wave gasket is positioned between the glass lens and the lens, serving as a buffer and seal; the positions of the lens and circuit board assembly are rationally arranged according to the light propagation path and heat dissipation requirements, ensuring that the light is evenly distributed to the required illumination area after passing through the lens, while the heat generated by the circuit board assembly can be dissipated by the heat sink in a timely manner, avoiding overheating that could affect the lifespan and safety of the lamp.

[0111] In summary, through the detailed description of each section, it can be seen that the design of this reading light fully considers the stability of the structure, heat dissipation performance, ease of adjustment, as well as the applicability and safety of the materials. The various components work together to form an efficient, reliable, adjustable, fixed reading light suitable for aircraft cabin lighting systems.

[0112] Working principle of this utility model

[0113] Electrical Connection and Power Supply: The reading light is connected to the aircraft's electrical system via a cable assembly. One end of the cable in the cable assembly is soldered to the circuit board assembly, and the other end passes through the semi-circular groove of the heat sink and is connected to the connector after crimping terminals. When the aircraft's electrical system is powered on, current is transmitted through the cable assembly to the circuit board assembly, providing power to the reading light's light source (such as LED beads) to make it illuminate.

[0114] Light adjustment and control: The lower housing is egg-shaped and can rotate around the radiator. Passengers can adjust the lighting range by rotating the lower housing to change the degree to which it blocks the light emitted by the circuit board assembly. When the lower housing is rotated, the friction between it and the base and the lower spherical shell allows the lower housing to remain in a specific position after rotation, achieving stepless adjustment of the lighting range.

[0115] Heat dissipation mechanism: The heat sink is made of aluminum alloy and has undergone anodizing treatment, providing excellent thermal conductivity and heat dissipation. During the operation of the reading light, the heat generated by the circuit board assembly is transferred to the heat sink. The heat sink, with its large surface area, dissipates the heat to the surrounding environment, thereby reducing the internal temperature of the reading light, ensuring the stable operation of the circuit board assembly, and extending its service life.

[0116] working methods

[0117] Installation and Fixing: First, slide the sliding locking plate onto the radiator. Then, align the base with the axial vertical groove of the radiator, ensuring the inner protrusion of the base is embedded in the vertical groove. Next, cover the upper and lower housings onto the spherical assembly and secure them with adhesive and clips. Then, install the spherical assembly (comprising the upper and lower spherical housings) onto the radiator, ensuring the opening retaining ring is embedded in the circumferential groove of the radiator. Finally, using the grooves on the outer circumferential ribs of the upper housing and clamps, fix the reading light to the upper-level assembly inside the aircraft cabin.

[0118] Adjusting the illumination range: Passengers can manually rotate the lower housing according to their reading needs. Due to the friction between the lower housing, the base, and the lower spherical shell, the lower housing can maintain its position after being rotated to a suitable location, thus adjusting the illumination range. For example, if a smaller illumination range is needed, the lower housing can be rotated to block more light; if a larger illumination range is needed, the lower housing can be rotated to block less light.

[0119] Electrical Connection: Solder the cables of the cable assembly onto the circuit board assembly, and then pass them sequentially through the two semi-circular slots of the heat sink. Crimp terminals onto the other end of the cables and connect them to the aviation plug connector to complete the electrical connection between the reading light and the aircraft electrical system, enabling the reading light to function properly.

[0120] Example

[0121] Specific application scenario: In aircraft cabins, one adjustable fixed reading light is installed above or to the side of each seat. Passengers can adjust the range and direction of the light as needed to obtain a comfortable lighting environment when reading books, using electronic devices, or engaging in other activities.

[0122] Installation Details: Pre-set the appropriate mounting bracket or fixing components at the designated installation location inside the aircraft cabin. Align the groove on the upper housing rib of the reading light with the clamp mounting position on the mounting bracket, then pass the stainless steel clamp through the groove and tighten it to secure the reading light firmly to the mounting bracket. Ensure the reading light will not loosen or fall off during aircraft vibrations and turbulence.

[0123] Adjustment Operation: While seated, passengers can easily adjust the lighting range by gently rotating the lower housing with their fingers. For example, to concentrate light on a book, the lower housing can be rotated to partially block light, focusing the illumination on the book area; to illuminate a larger area, such as a place where items are placed, the lower housing can be rotated to block less light, expanding the lighting range. During adjustment, the friction between the lower housing, the base, and the lower spherical shell is moderate, allowing for easy rotation while maintaining positional stability.

[0124] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained:

[0125] Simple and reliable structure: The reading lamp features a simple structural design with few components, and the connections between these components are simple and reliable, using methods such as adhesive bonding, snap-fit ​​connections, and embedded retaining rings. This not only reduces production costs but also minimizes the risk of failure due to structural complexity, improving product reliability and ease of maintenance.

[0126] Compact size and lightweight: The overall design is compact and small in size, taking up little space in the aircraft cabin and facilitating installation and placement. Furthermore, the use of lightweight materials such as aluminum alloy and plastics makes the reading light lightweight, helping to reduce the overall load on the aircraft, lower fuel consumption, and meeting the aviation industry's requirements for lightweight equipment.

[0127] Flexible lighting adjustment: The egg-shaped design and friction-locking function of the lower casing allow passengers to easily adjust the lighting range, and the adjusted position remains stable. This flexible lighting adjustment method can meet the reading needs of passengers in different scenarios, improving passenger comfort and satisfaction.

[0128] Excellent heat dissipation performance: The heat sink is made of aluminum alloy and anodized, providing excellent heat dissipation and effectively dissipating the heat generated by the circuit board components during operation. This helps maintain stable operation of the reading light, extends its lifespan, and reduces safety risks caused by overheating, such as short circuits and burnout.

[0129] Easy and efficient installation: The grooved design on the outer ribs of the upper shell, combined with the clamp fixing method, makes the installation and removal of the reading light very convenient and quick. During installation in the aircraft cabin, no complicated tools or cumbersome steps are required to firmly fix the reading light in the designated position, improving installation efficiency and saving installation time and labor costs.

[0130] Highly adaptable and with broad application prospects: This reading light is specifically designed for aircraft cabin lighting systems, taking into full account the special requirements of the aviation environment, such as space constraints, weight requirements, and electrical safety. Its excellent performance and features enable it to meet the reading needs of different passengers in the aircraft cabin, offering broad application prospects and providing a reference for the design of lighting equipment in other similar confined spaces.

[0131] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An adjustable fixed reading lamp, characterized in that, include: The heat sink (1) abuts against the circuit board assembly (13) at its top, providing fixed support for the glass lens (9), the wave washer (12), the lens (10) and the circuit board assembly (13); The spherical shell assembly (6) includes an upper spherical shell (7) and a lower spherical shell (8), which are glued together and fastened together. Inside, from top to bottom, there are a glass lens (9), a wave washer (12), a lens (10), a circuit board assembly (13), and an opening retaining ring (11). The opening retaining ring (11) is embedded in the circumferential groove of the heat sink (1) to ensure the axial stability of the spherical shell assembly (6). The cable assembly (14) includes two cables, one end of which is soldered to the circuit board assembly (13), and the other end passes through two opposing semi-circular slots of the heat sink (1) in sequence, and is connected to the connector after crimping the terminal to realize the interconnection between the reading light and the onboard electrical system. The upper shell (4) and the lower shell (5) cover the spherical shell assembly (6) and are fixed by adhesive and snap-fit ​​connection. The lower shell (5) is egg-shaped and located between the base (3) and the lower spherical shell (8). It can rotate and maintain its position by friction with the base (3) and the lower spherical shell (8) after rotation, thereby blocking the light emitted by the circuit board assembly (13) and adjusting the illumination range. The sliding locking piece (2) and the base (3) are fitted onto the radiator (1). The sliding locking piece (2) is located between the base (3) and the upper shell (4) and lower shell (5) assembly. The inner protrusions of the base (3) and the lower spherical shell (8) cooperate with the axial vertical groove of the radiator (1) to ensure the circumferential fixation of the structure. The outer periphery of the upper housing (4) is provided with a rib, and grooves are opened on each rib. With the help of clamps, the reading light can be fixed to the upper component.

2. The reading lamp according to claim 1, characterized in that: Glue is applied to the connection between the upper spherical shell (7) and the lower spherical shell (8) and a buckle is set. The glass lens (9) is attached to the inner wall of the upper spherical shell (7). The wave washer (12), lens (10), and circuit board assembly (13) are connected in sequence. The upper end face of the heat sink (1) abuts against the circuit board assembly (13). The opening retaining ring (11) is embedded in the circumferential groove of the heat sink (1).

3. The reading lamp according to claim 2, characterized in that: The cable of the cable assembly (14) is soldered to the circuit board assembly (13), passes through the semi-circular groove of the heat sink (1), and is connected to the connector after crimping the terminal.

4. The reading lamp according to claim 3, characterized in that: The sliding locking piece (2) is made of stainless steel and is located between the base (3) and the upper shell (4) and lower shell (5) assembly. The inner protrusions of the base (3) and the lower spherical shell (8) cooperate with the axial vertical groove of the radiator (1).

5. The reading lamp according to claim 4, characterized in that: The lower shell (5) is egg-shaped and maintains its position through friction after rotation. Grooves are opened on the ribs of the upper shell (4) to match the clamps.

6. The reading lamp according to claim 5, characterized in that: The radiator (1) is made of aluminum alloy with anodized surface, the sliding lock plate (2) is made of stainless steel, and the base (3) is made of plastic.

7. The reading lamp according to claim 6, characterized in that: The upper and lower spherical shells of the upper shell, lower shell, and spherical shell assembly are made of plastic, the glass lens (9) is optical glass, the lens (10) is an optical lens, the opening retaining ring (11) is made of rubber, and the wave washer (12) is made of metal.

8. The reading lamp according to claim 7, characterized in that: The cable assembly (14) has aviation-grade wires, flame-retardant outer sheaths, tin-lead solder joints, cold-pressed terminals, and aviation plugs as connectors.

9. The reading lamp according to claim 8, characterized in that: The lower housing (5) can be rotated to block light, and the friction between it and the base (3) and the lower spherical shell (8) is controllable. The groove of the upper housing (4) is a rectangular groove, and the clamp is made of stainless steel.

10. The reading lamp according to claim 9, characterized in that: The axial vertical groove of the radiator (1) matches the protrusion of the base (3) and the lower spherical shell (8). The opening retaining ring (11) is embedded in the circumferential groove of the radiator (1). The upper spherical shell (7) and the lower spherical shell (8) are fixed by glue and buckles. The installation order and position of the glass lens (9), wave washer (12), lens (10) and circuit board assembly (13) in the spherical shell assembly (6) have been optimized.

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